Improvement in steam-pumps



E. COPE, I. BHMAXWELL &. J. R. PADDACK.

STEAM PUMP.

Patented Aug. 8.1876,

INVENTDRS f N-FETERS. FHOTO-LITHOGRPHER. WA'SHINGTON. D, C.

UNITED STATES PATENT OFFICE.7

EZR COPE AND JAMEs n. MAXWELL, OF HAMILTON, OHIO, AND JAMEs r V R. PADDACK, OF CHICAGO, ILLINOIS.

IMPROVEMENT m STEAM-PUMPS. I

To all whom it may concern Be it known that we, EZRA CoPE and JAMES R. MAXWELL, of the city of Hamilton,

1 county of Butler, and State of Ohio, and

JAMES R. PADDACK, of Chicago, Cook county, Illinois, have invented certain new and useful Improvements in the Construction of Steam Pumping-Engines; and we declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, which forms a part of this specification.

Our invention consists, first, in the construction of the pump and the arrangement of its valves; and, second, in an attachment for maintaining the supply of air in the airvessels of steam-pumps while they are in motion.

In the drawings, Figure 1 is a longitudinal sectional view of the pump with steam-engine suction and discharge valve chambers, and

the suction-valve and suction chambers. These partitions J .J, and the valve-cap face K, are inclined at an angle, the opening of which is toward the pump-cylinder. These angles may vary as the circumstancesof the case may require. We'find, however, the most convenient arrangement to be to incline the partitions at an angle of thirty (30) degrees, and the valve-cap face at an angle of about seventy (70) degreesto the base-line.

By this arrangement of the valves we gain several very important advantages: first, the water-passages are very direct; second, no additional holes are required to 'admit a boringbar to bore out and dress the seats, the main valve'openings in this arrangement admitting the bar; third, the valves are more easily fitted, and are more convenient for inspection ,and repairs, than when placed in any other position fourth, the space required for the valve is much less than in any other arrangement.

The valve-chambers are closed with doors or caps C, which may be removed without disturbing any other part ofthe pump, and thus convenient access may be had to the valves. The valve-seats are of brass or composition metal, with large openings. The valves may be either brass or rubber, as desired, or as-the quality of the water to be pumped may demand.

As heretofore mentioned, the remainder of the large chamber surrounding the pump-cylinder is subdivided. by partitions, (shown in dotted lines in Fig. 1,) into two vacuum-chambers, one for each end of the pump, and a suction-chamber. The vacuum-chambers relieve the pump from all shock or jar. The suctionopening D is at the'top of the suction-chamber D, as high or even higher than the discharge-valves, thus keeping the pump constan'tly primed, so that it never fails to fill when in operation.

The air-feeding attachment L consists of two valves, l l, in a chamber which is bolted to the discharge-chamber H, or to the base of the air-vessel. m is the air-inlet passage, and n 'n are air-passages which meet similar passages o 0 cored or drilled in the dischargechamber H. The passage 0 extends downward to the suction-valvechamber G, while 0 has a pipe screwed into its end, which extends to the upper part of the air-vessel, or above the influence of the discharged liquid.

The operation of the air-feeder is as follows: The pump-piston moving from left to right, as shown in Fig. l, a vacuum is created in the passage 0, and the air, raising the valve 1, fills this passage, and passes into the suction-valve chamber G. Upon the return. of the piston the air thus admitted is forced upward by the water, opening the valve l and passing through the passage 0 and the pipe to the air-vessel. A stop-cock is usually attached to the inletpassage m, so that theair-feeder may be adjusted to admit the proper supply of air.

In cases Where the air-vessel is standing under pressure, and the pump may become Specification forming part of Letters Patent No. 180,701, dated August 8, 1876; application filed Y September 24, 1875.

filled with air, so as to defeat its action, we

provide the additional air-relief check-valve m in the chamber M.

Having thus fully described the construction and operation of our invention, what we claim as new, and desire-to secure by Letters Patent, is-

I. The combination of a pump-cylinder, A, with suction, discharge, vacuum, and valve chambers, when constructed in one'and the same piece, as and for the purpose specified.

2. The combination of a pump-cylinder, A, with the partitions J J, which separate the valve-chambers, and upon which the valves or seats are seated, and the valve-cap face K, when said partitions J J and face K are placed at an angle to the base-line of the pump, substantially as described;

3. The combination of a pump, with airpassages 0 and 0, and the air-feeding attachment L, substantially as described.

4. The combination of a pump, with airpassages 0 and 0, the air-feeding attachment L, and the air-relief check-valve M, substantially as described.

EZRA COPE. J. R. MAXWELL.

J. R. PADDAOK. Witness-es;

T. B. PADDACK, R. G. MCKINNEY. 

